Home / 315,825.34-435,831.78-172,586.26

Finding the Fourth Proportional to 315,825.34, 435,831.78 and 172,586.26

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Solution

The fourth proportional to 315,825.34, 435,831.78 and 172,586.26 is: 238,165.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,825.34 : 435,831.78 = 172,586.26 : x
  2. Step 2: Convert to fraction form
    315,825.34/435,831.78 = 172,586.26/x
  3. Step 3: Cross multiply
    315,825.34x = 435,831.78 × 172,586.26
  4. Step 4: Simplify right side
    315,825.34x = 75,218,576,899.34
  5. Step 5: Solve for x
    x = 75,218,576,899.34/315,825.34
  6. Step 6: Final answer
    x = 238,165.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.